Doom was with the crew that crash landed in Roswell NM. He assimilated one of the farmers and walked away undetected. He's been terrorizing the western US ever since.
My kid has a small collection of the Mobster Jam truck too. I bought him the Hotwheels drag strip and spent about a month trying to find a double track loop that was configured to allow them to go through it. Most Hotwheels double loops are setup individually which prevent the Monster Jam trucks...
I had these as a kid.
My dad's friend ran the local landfill and brought home a bunch of boxes of them that he gave to me and my little bro. I used to throw them at people on the bus lol.