When operating at high speeds(>60mph) how stable is the ride, also how does it handle at high speed in a strong cross wind?

Based on the fact that it is an extremely well designed vehicle, it should be much more stable then any high walled transport truck in a crosswind. There is vey little or virtually no sidewall on this vehicle to capture and side wind. What sidewall there is is very rounded. Just an estimate on my part but I suspect it is several time more stable than most trucks and cars currently caught in crosswinds. I am not an expert and I have never seen one but I would bet that it is very stable in any virtually any windy situation.

Aptera has stated that it has tested stable in 110 mph cross winds - far higher than the average slab sided SUV can withstand.

@Christine Paluch Thanks for reminding me another advantage of hub motors is an even lower CG! Motor weight is lowered to "axle" height, & the gearbox & differential are deleted from above it.

Right. Literally 1mph below a category 3 hurricane, during the last-minute evacuation of which it's also handy that the hub motors work fine when fully submerged in salt water.

Usually electric cars have a lower center of gravity too, which helps a great deal with stability.