In heads up racing being able to stage last is super important with a turbo car. It allows you to spool all the way up before you light the second bulb, and then you will only have between 3-7 seconds before the tree drops(protree). In that particular race, the GN was outgunned and needed the tree to have a chance, had he not burst a oil line, he would have beat a 200 mph mustang, in a slightly detuned trim.
The GN is already back together and racing to my knowledge.
Regardless, in heads up racing with a turbo car, the staging war is everything.