Admittedly, all the race-car attempts I've been in have failed for one reason or another. (Usually because of a DPS popping sprint before Invigorate, and not getting the full sprint duration.)
I still don't like popping sprint and blowing all my TP though, especially as Tank. I'm willing to do it if there's a bard or ninja around, but I still don't like it. I absolutely HATE leaving TP regen up to either time or the whim of other players to fix.
Nascar isn't so bad, you don't need the full sprint duration just enough tp to make close to the full circuit around the arena. It keeps everyone clustered together as well so everyone takes minimal amounts of damage from the meteors and is in range for swift cast succor/medica. If you have paeon up your tp regens to around 700+ by the time golems are out again.
I pushed back against it with my static after we kept getting blown up by bad meteor placement but eventually we got it down to 100% consistency. The main thing that helped in that regard was everyone using sprint as soon as the first marker appears and picking a spot on the little hands for everyone to aim to pass through, if someone is falling behind they can cut towards the inside to catch back up.