Consider, if you will, the Marx toy company Big Wheel, best described by Alison the Heavy Metal Waitress as "A red piece of plastic, until you leave it out in the rain, when it becomes an orange piece of plastic"... an inexpensive plastic tricycle that had special "spin out" brakes on the rear wheels. I had a Big Wheel as a kid, I imagine most of the people in my age cohort in the states had one. It was a pretty sweet ride, all told.
Today, while walking home from running errands, I passed by the local school and saw a couple of pre-adolescents riding some sweet-looking big "Big Wheels". These things had adjustable seats, so they looked like an adult could possibly ride one. I asked their mom where she had gotten these badass machines, and she told me that Toys-R-Us has them on sale.
Poking around the intert00bz, I discovered that there are high end adult "Big Wheels". Who knew? I imagine it would be impractical to commute to work using one of these- the temptation to continually "spin out" would slow one's progress down. Still, watching the kids doing donuts on the basketball court had me pondering a bout of arrested development.