On Fri, 31 Dec 2004 15:24:02 -0800, "NW_PILOT"
wrote:

an aircraft on the runway it looked like super cub or something
with big tires practicing either high-speed taxiing on the runway or
simulated engine outs and bouncing?

If the plane was newish, it might have been an Aviat Husky with tundra
tires. I've never landed a Husky on asphalt, so this is only hearsay,
but I understand that tundra tires can slingshot the plane into the
air on landing. The big tires evidently store up energy, then release
it. Perhaps your guy was trying to get the hang of landing on his new?
$4,000 tires, and he did it at one a.m. so nobody would see?

Little did he know that Usenet is everywhere!