[brohee]

It's a collectible but the remaining ones can likely be improved very much with modern eBike parts, lighter and more powerful motor and batteries...

[chihuahua]

However, 3 wheelers quickly reach their limitations in turns, since you can't lean to balance. So making a C5 go much faster than its original top speed could be risky.

[pmyteh]

I don't think the speed would be an enormous problem; the legal (powered) speed limit for e-bikes in the UK is essentially the same as when the C5 was new, at 25km/h. So as long as you stick with a stock EU/UK standard controller you should be fine.

And you'd get a fantastic amount more grunt uphill and a longer range with a modern battery and motor.

[lukevp]

Could the car lean if it had electric suspension? Is this a fundamental limitation of a 3 wheeler with 2 in the back or is it just difficult to achieve?