Not everyone has a car, not every teen when he/she turns 16 or 17 gets a car...Not just that not every college student has a car, many college students stay in doorms in other cities without a car well in some of those cities some dont have buses others the bus pass every 2 hours...Why not get one of these type of buses:

http://www.bargainbusnews.com/Buses/2478-1998ChevyMidBus/

http://www.bargainbusnews.com/Buses/2512-1995InternationalThomas/

http://www.bargainbusnews.com/Buses/2460-2002FordE450/

charge passengers, $20 a month and you become their private cab-bus...For example: 30 passengers x $20 = $600 do it twice a day and is: $1,200 you will make....can pay a home with it...$1,200 in 7 years and you have a: $100,000 paid off cash in just 7 years...Get 2 buses and you will have your house in: 3.5 years FOR A TEEN???VERY GOOD....

Some Thoughts...

In some countries the ones that will allow it, motorcycles like dirt bikes can be used and cheap cabs...charge less than a cab...

Some Thoughts...

Check this color coded matrix:

http://football.razzball.com/wp-content/uploads/2010/08/Picture-6.png

what if in each of those colors there was a number...Now mix the colors with card games like casino card games anld create a new  casino game not just 1 but like 1,000 of them [those games] there will be...you can even mix some bingo on it, like a board card will have different permutations of colors and a player uses one board card just like bingo and matches it with casino playing cards...