Think you've started something here. Went routing in the garage to retrieve these bad boys.
The closest is the eldest lads - a Traxxas Rustler VXL. This version is capable of well in excess of 60mph! I think it is fitted with a 31T pinion, maybe 28t. Takes about 2-3 seconds to get to that speed. Blisteringly fast.
The shocks though are prone to breaking with the massive loads they are subject too. The plastic bodies need to be replaced with metal ones. Needs a massive space to get the most out of it though. A big car-park or a beach after the tide has gone out. They do a 4x4 version of this beast now.
The second one is the youngest's - slightly slower but still quick a HPI-Racing Firestorm 10T. Despite being 10 year old both these machines have brushless motors.
The top on is my own Axial AX10 Scorpian Rockcrawler. Fitted with locked differentials. Not quick, but will climb even steps.
Sadly, none of the batteries except the lowest capacity are working. I see some replacement parts being ordered very soon.