I used to run larger cars back in middle school, was just too costly, I'd drop massive amounts of money into it....and being 14 telling my mom im going to get gas....well it kinda freaked her out until she found out it was for my rc car...
I like the bits cause the fastedt bit is far easier to repair after a wreck (just flip it over again) compared to a fuel powered car going 50mph into something
Plus a nice fuel car is over 300 bucks.....a nice bit is about 60 after you put all teh parts into it, quite a bit cheaper

plus they dont self destruct quite as badly when you drop them from anyhting more than a foot