your friends are very lucky,
my friends are stuck with civics/integras/accords/240sx...
although one of them does own a G35, 98 Integra LS with a Cr/vtec setup, and R1... i guess he paid for all of it. Hes 24 yrs old, but his dad gave him 10Kwhen he was like 19 or soemthing to do what ever he pleased, he invested it, got some cash from investments, paid his dad back,started his own business (some UPS store) now he owns all the vehicles listed.
im 19 years old, my first car was a EJ civic that i paid for by myself, sold it got a 98 civic that i too paid for myself. both cars cost me 8K together quite proud of it too. although both cars never pass the 14.5 sec quarter cuz swaps are expensive and im a tad lazy to work too hard to earn my money

h: come to think of it, i think ive only earn around 20K ever since i started working when i was 15