I really like the ideas behind this car as using a second spur is lighter than having 2 more pulleys and 1 more belt. and the overdrive/under drive ability. I see the adjustable caster idea is really nice with the sliding plates and makes it a lot easier than the awesomatix method . I see the rear caster is adjustable and will assume this is there method of adjusting wheelbase just like the awesomatix. I'm not sure why everyone is always thinking you cant race competitively with a shorty pack? I have been able to race stock and mod with a shorty without any problems with power drop off during the run. also the batteries are getting better so I can see this being the future for all tc cars . only downside I see is having to add a lot of weight to meet the minimum requirements per the rules.
since this is the pre production prototype version I would like to see the finished product.