I noticed that the reason I bumped into the car and jumped was because of the road not being flat. It kinda goes down a bit so the car acted as a bump or something. Maybe it is possible to actually try this in a non-accidental manner. Like maybe putting a cheetah on that road slope and do the same thing, then try and land that building in front (Most people prefer stunts which are not "set up" though, like me, but I think it's okay for this particular stunt). I think it will work. Gotta try that when gliding is back