I was told for the sealion 7 that the batteries are mounted at the bottom and they've had people with punctured batteries. I've heard the same thing for Tesla too.
Byd will likely have cars suitable for those environments long before Tesla though.
To me, the flying car was really a vote against looking at Tesla and reminds me of all the other overpromising Elon has done anyway, especially when byd has a working jumping car already