yeah, good point. It is even harder to explain to someone that I am into electric rc cars, as they tend to think of rc toys, at least if you say nitro or petrol they know they aren't kids toys. Trying to explain that my electric cars go up to 60mph and are faster than most nitro's and petrol rc cars confuses people and they probably think yeah... whatever!
When people actually see what these models can do they are often amazed and begin to understand what the appeal is.