LOL. Actually, any goo that dissolve cars whole can probably clean up our landfills too.
Dagnee, that quote your responded to wasn't mine, but I will say that according to your definition, all science fiction can be viewed as fantasy, it's just a question of degrees. Are Star Trek transporters sci-fi or fantasy? I lost count of the number of times Commander Data used technobabble to justify the solution to whatever emergency they were facing. What about "aerial" dogfights in the gravityless vacuum of space as pictured in Star Wars? With sound! Those two franchises are generally considered space opera (a subgenre of sci-fi), same place where I put mine.
Besides, the science says that the strongest superacids (nasty stuff) can dissolve anything pretty much instantaneously, so it's doable, albeit complicated. Mine is a simplified variant of that. As Gene Roddenberry is quoted as saying, when a cop pulls out a gun, he doesn't stop to explain it.
Thanks to all.
Dirk
EDIT: In case anyone is curious, the strongest acid is fluoroantimonic acid (20 quintillion times stronger than sulphuric acid). Apparently, the only thing capable of containing it is, oddly enough, teflon.