Old Buggies doing speed runs. 1/8 Associated B6.3, 1/10 Associated B6.1 and 1/10 Team Durango B-210. 

The first file was corrupt on the B6.3e so I cut it down to about 20 seconds just to show the GPS speed result at the beginning of this video. The other 2 clips are okay. The 1/8th B3.1e that had the corrupt file at the beginning did 53 mph on the gps.