I genuinely believe he is and I am not projecting my own desires.
The way he went about the new motor home tour, the way he he conducts his interviews pre-race or in a segment where the drivers are just doing something for marketing reasons. Ollie just gives off this suppressed camp vibe where he alters his voice, a lot of people come across as camp and aren't gay or even remotely bi or interested in men but he just seems to be stretching a bit.
I think the current grid would actually be very accepting if one of the 20 were to be bi/gay. I could be totally wrong.