Not exactly swamp. A well tuned .12 would be almost as responsive as an electric motor.
You can't buy a motor for $40 unless it was second hand. You can't make a Blazing Star fast either. The construction of the whole car is rigged full or sloppyness, bushings and unecessary weight. There is way too much rolling resistance throughout as well. We bolted in a new 19t Quad Mag in my mate's and it was no faster then a Losi/AE with a 540 Johnson motor, literally!