Sidecars, my goodness. These bikes are low to the ground. The driver lays nearly prone across the tank with his feet on pegs that come off the rear wheel. The passenger's platform is about 3 by 4 feet. On the straights the passenger sits behind the driver. He or she(often she cuz their are lots of husband wife teams-think about the extra stress that would put on a relationship) leans over to the right for righthanders and slides to the far left and hangs out a bit to shift the center of gravity so the bike can turn left.
All this happens while they are hauling ass. You can see the passenger(perhaps there's a better word than passenger cuz it's anything but passive) bouncing around while trying to safely and quickly move across the platform. Sometimes they lay on their bellies with most of their legs hanging off the back. Legs straight cuz if they're curled they produce drag and if they touch the ground for more than a second or two, it's bye-bye little piggies.
We watched the classic sidecar race in the morning. I guess their pretty slow because they only average 80 mph or so. We only got to see six teams practice last night cuz there was a crash further up the course and by the time the course had been cleared of all the bits and pieces, it had to be called on darkness.