I been playing racing games, all the way back to commodore 64, started with test drive and formula 1 games on the commodore, had racing games for nes, etc, played most every gt game on playstation, played rfactor on pc.
do i accelerate faster and tend to drive over the speed limit? hells yea, have i gotten many tickets? got pulled over a few times mostly for not having my seatbelt on rather than speeding.
But i do notice when i play alot of gt5 for instance, i am driving much harder than say if i am in non racing gaming cycle. but also have to say that i generally drive harder than most people, i late break, i accelerate thru turns, i get up to speed fast, and i loathe the 25 and 35 mph speed limits in quiet back streets that have loads of visibility and a wide road to drive on, cetp during school hours when kids are being dropped off or picked up.
never been in an accident but a elk crossing the road in front of my car at 3 am, beyond that my skills have often saved me form getting into accidents rather than causing them since i tend to look for the quickest way out of a sticky situation, rather than slam on the brakes and hope things turn out alright, can think of 2 or 3 incidents where speeding up saved an accident where breaking would have caused one. but i do not drive super crazy anymore lest not since my teens and early 20s when i would max out a car speed when on the interstate from time to time. now days i pretty much accelerate quickly 5 to 10 mph over the limit and cruise.
so i can see where this study does have some correlation to speeding tickets and the like but the fact that us "race" drivers get into fewer accidents, also means we are safer drivers rather than dangerous.