Back in biz school in 1967, one subject for discussion was "how to get rich". The answer was often:
Think up a product that is not available but that customers would buy, invent it (i.e., design and develop the product), and market it.
So design, develop and market your electric toad and you'll get rich.
Grumpy ole man with over 50 years towing experience. Now my heaviest trailer is a 7,000-pound enclosed cargo trailer, RV is a 5,600 pound Skyline Nomad Joey 196S, and my tow vehicle is a 2012 F-150 EcoBoost SuperCrew.