I think that on average, car drivers are less passionate, as most are using it for utility. On the Enthusiast side, I think the averages are similar, but still lean towards motorcyclists being more passionate, with the main example being the % of motorcyclists having custom exhausts and levers. I'd estimate at least 25% of motorcycles have those features. For cars, I'd estimate 5-10% would have custom exhaust or steering wheels.