Stability is a main issue.
- It is certainly better than a motorcycle especially if you have a passenger, but
- In case of a pothole, there will be always one wheel hitting the hole, making the ride uncomfortable, and
- Taking a curve at high speed would have a risk of instability, such as the famous Moose test.
One of the drawback of this vehicle is taking basically the same real estate than a compact car.
I saw Sandy Monroe stacking them vertically, but this might not really worth the added complexity.
But if you have only a one car garage, you will have to make a choice between a car and a tricycle.
The bottom line is does customers would like such vehicle?
This cannot replace a real car, as driving on freeway at high speed among SUVs and trucks would be scary for the less.
So this type of vehicle would be good for local grocery trips or going to a commuter train station.
Basically this will be an upscale golf cart with doors.
Three wheels save weight, improving range, but affect stability.
If you have a home where parking is not an issue, having an additional tricycle or quadricycle could be an option.
There is potentially a market of those vehicles, I noticed some mini EVs such as the
Citroen Ami or the
Renault Twizy.
But looking at the not successful Indian
Tata Nano,
customer would prefer buy a used EV than a tricycle for the same price.