I think 1/10th gas truck is more of a class to race on an eletric track with electrics.. they handle much more similar. Trying to race 1/8th buggy and 1/10th gas truck on the same day at a big race is hard for alot of drivers.. it's like trying to run stock and mod. I'd much rather run two 1/8th classes.
Also tracks are getting bigger and gnarlier...