explosive front and rear bumpers that are built like the propane tank but look like regular front/rear bumper till you hit them
Pretty dumb idea unless your plan is to turn an asian lady driving her kia into a taliban suicide bomber.
In all honesty, I have no idea... I just googled "Pinto exploding meme" and it was one of the ones that came up in the images and I just thought it was to perfect not to put in here.