21st century. We can make better now.
And they can stick wifi on them all. Controlled, airborne, free internet.
Heck with it. I'll take my flying car, but have it be a bit of a blimp too so if it messes up, it will just float around. No road maintenance needed then either. Money saved. I can just hop in, let it float/drive me to work, and read email along the way. Add some solar power with the amount of ballast covering used.