First time a watched I thought it was an implosion... don't know why.
Looks nice, but I have to agree with JayG about the synchronization of the flames.
As far as i can see explosion starts at frame 59-60 a couple of frames a bright flash, then there's a frame where the car is already in the air and the ground is very nicely lit but there is no flame source for it. I think that's where we should see the fire start. I'm not an expert, just saying.
BTW, love the smoke/dust ring effect