If it's anything like other racing games I've tried in VR, the lack of a modelled cockpit would make it horrible to play. I've found being mentally grounded in a cockpit takes all motion sickness away, but switch to an outside view or a bumper cam and it's nausea city.
Played this for a few hours tonight, most of which was spent on one track trying to shave off thousandths of a second to get a green medal. Got the strawberry floaters in the end though.