Why weren't cars banned when it was discovered that they COULD be used as getaway vehicles from bank heists or to run people over? (3d Printing shouldn't be banned just because someone COULD print guns with it. They can be used for good AND for ill, just like cars!)

Why weren't cars banned when it was discovered that they COULD be used as getaway vehicles from bank heists or to run people over? (3d Printing shouldn't be banned just because someone COULD print guns with it. They can be used for good AND for ill, just like cars!)