[svandamme]

it's not practical in terms of safety at all
most modern car makers advertise that they designed their car with safety structures inside the door, and how the door is basically a buffer zone, and how much distance it puts between the driver/passenger and the initial point of impact

with this system, they can't make the doors thick/wide, which directly conflicts with that standoff design, required to get the good safety scores

and frankly, i don't like it much, makes your car interior a bloody viewing window, anybody can look inside
most folks view their car as their cocoon, their private space, never mind the fact that most cars aren't always as clean as we want it to be, do car owner like the idea of having the whole side open up if they need to get out at the fuel station? what about kids in the back seat? what about valuables on the back seat?

it's a dead in the water concept as far as i'm concerned