Things have to be pretty rough to offer a flamethrower fitted as an accessory on your 1998 BMW. But that apparently that considered a safety device in Johannesburg during the late '90s. Still, there could be other uses for it.
Especially with the intense winter and snow much of the U.S. has endured this year, this option could be just as convenient as a heated steering wheel. Provided you knew how to use it.