Current electric semis are only good for hauling potato chips (i.e. mostly air) for any distance over 100km.

Weight is very very valuable on both passenger cars and commercial trucks. Hauling those extra 300-500kg vs a comparable size sedan comes at a steep cost too, as increasing weight requires stronger/wheels body, wheels, brakes, even engines.

There is a huge demand for higher energy density, preferably of a non-explosive kind.