This bright orange plastic seat looks as if it could have been made especially for Genesis! In fact it was made for a Sega computer game, but it would fit perfectly if it weren't sitting on top of the existing Honda car seat base. And since it's hollow, it could double as a fuel tank, if you were brave enough! Surprisingly comfortable too.
Snapped on my iPhone at John Mitchenson's Rally Raid HQ in deepest Northants, Sept 2011. PNB