CBS/AP) Gasoline prices were poised Monday to set a new record at the pump, having surged to within half a cent of their record high of $3.227 a gallon. Oil prices, meanwhile, surged above $108 to a new inflation-adjusted record and their fifth new high in the last six sessions on an upbeat report on wholesale inventories.

The national average price of a gallon of gas rose 0.7 cent overnight to $3.222 a gallon, 69 cents higher than one year ago, according to AAA and the Oil Price Information Service. Last May, prices peaked at $3.227 as surging demand and a string of refinery outages raised concerns about supplies.

That record will likely be left in the dust soon as gas prices accelerate toward levels that could approach $4 a gallon, though most analysts believe prices will peak below that psychologically significant mark. In its last forecast, released last month, the Energy Department said prices will likely peak around $3.40 a gallon this spring; a new forecast is due Tuesday.

The high prices are affecting transportation habits. New numbers out Monday show Americans took more than 10 billion trips on public transportation last year - the most in 50 years, reports CBS News correspondent Ben Tracy. Even in car-centric Los Angeles, subway ridership is up.

Economists say the economic slowdown and the rude awakening that high gas prices are here to stay are finally changing behavior, Tracy adds.

"We're seeing an increase in public transportation nationwide, SUV sales are down, hybrid sales are up. This is a national trend," says Christopher Knittel, an economist at the University of California at Davis.

Retail gas prices are following crude oil, which has jumped 25 percent in a month. On Monday, crude prices surged to yet another record after the Commerce Department said wholesale sales jumped by 2.7 percent in January, their biggest increase in four years, according to Dow Jones Newswires.

The strong sales report suggested to oil traders that the struggling economy may be doing better than thought.

Light, sweet crude for April delivery rose $2.75 to settle at a record $107.90 on the New York Mercantile Exchange after earlier setting a new trading record of $108.21.

Energy investors shrugged off a relative stabilization of the dollar and a cooling in tensions between Venezuela and its neighbors Colombia and Ecuador.

Many analysts believe speculative investing attracted by the weak dollar is the primary reason oil has risen so far so fast in recent months. Crude futures offer a hedge against a falling dollar, and oil futures bought and sold in dollars are more attractive to foreign investors when the dollar is falling.

"We've got a Fed(eral Reserve) meeting on the 18th that could see a sizeable rate cut," said Brad Samples, an analyst with Summit Energy Services Inc., in Louisville, Ky. "So, it's not over."

Indeed, while the dollar rose against the euro on Monday, many investors believe the greenback is likely to keep falling as the Fed continues to cut rates. Many analysts believe the rise in crude prices is not supported by the market's underlying fundamentals, noting that supplies are generally rising while demand is falling.

"By gobbling up everything in sight, (investors) are pushing food and fuel prices to ruinously high levels," said Peter Beutel, president of the energy risk management firm Cameron Hanover, in a research note.

Investors shrugged off a weekend cooling of tensions in South America, where Venezuela said Sunday it was restoring full diplomatic ties with Colombia after they were broken off following a cross-border Colombian attack on a leftist rebel camp in Ecuador.

Last week, rebels shut down a Colombian oil pipeline in retaliation for the Colombian raid into Ecuador. Venezuela threatened to slash trade and nationalize Colombian-owned businesses, and Venezuela and Ecuador briefly sent troops to their borders with Colombia.

The potential for conflict involving Venezuela, an OPEC member and major U.S. oil supplier, helped push oil higher last week.

"The Venezuelan production was at risk there," Samples said.

Other energy futures also rose Monday. April heating oil futures rose 2.64 cents to settle at $2.9734 a gallon while April gasoline futures rose 2.06 cents to settle at $2.7149 a gallon.

April natural gas futures jumped 25.5 cents to $10.024 per 1,000 cubic feet, the first time a natural gas contract has closed above $10 since January 2006. Natural gas was following oil higher, but also rising in anticipation of cooler temperatures across the Midwest and Northeast, analysts said.

In London, Brent crude futures rose $1.78 to $104.16 a barrel on the ICE Futures exchange.