It surprised me how little power these need to haul. One thing's for sure, your VXL stuff would be on vacation in the kart.
I was also surprised to find that these have ball bearing kingpins. I'm constantly impressed with what I'm learning about Turnigy. I decided to look into the 1/4 kits, and maybe try some off the dock onroad sometime. The price in the US is $33, and the shipping for 2 was only a buck more than 1... so, I ordered 2. $41 apiece, to my door... I'll play with them someday.
http://www.hobbyking.com/hobbyking/s...arehouse_.html
These little ones have got me going through all my long ago packed away slotcar stuff. Pics of some weird stuff when and as I unearth it. Really weird stuff...