Many of the extreme sport bikes are the car equivalent of Ferrari's, Porches and Lambo's. Which clearly are beyond the means of the everyman/woman. Besides, typically family needs push us to buy minivans, SUV's, commuters etc. Some SUV's, like the Suburban, can be speciality cars but the niche is a bit more open with Police, Secret Service, Civil Engineers, ranchers etc. using them for the large interior room; more than what a Taurus or Impala would give. Oddly enough, you just don't see many Taurus', Impala's - your standard full sized family sedan that much any more. They have been replaced by Focus, Cruze, Camray's and such.
And pickups, oh my, units like a Ford F150 King Ranch really push the envelope! Even my truck is well beyond anything I imagined as a kid and she is no King Ranch (beyond my grasp, but would have loved one!!).
So in the car game, there are cars and trucks we'd like, but either can't afford or justify the expense of ownership. I've seen folks tour in a small Lotus and Porche, can't say it was the best choice - especially once you hit the great expanse of the West and Mid-west. The thought of traveling across the big states out here have me considering a "cruiser" like an Indian Chieften or Moto Guzzi 1400 California. Even though, the CB would be a better choice once I arrive at my destination.