Not sure I understand the physics you are referring to...are you talking about batteries? combustion process? or ??
Remember we've been improving mobile IC engines for 130 years or so. Computers a much shorter time. The low hanging fruit is easier to pick.
Batteries, engines.... they haven’t been improved for nearly a century.
But things are starting to look up.
Until recently, there was little economic incentive to dump the IC engine car.