2in1 was released in October 1979 in Japan for 740,000 Yen.
"2in1: Rolling Crash + Moon base [Model RC-10001]
Rolling Crash varies from the "Head-On
" games in three ways :
1) The game wraps around in a figure eight, making game play different in each part
2) If you run into the enemy car where you can change lanes, your car doesn't die but instead gets pushed over to another lane.
3) The dots actively slow down your car. This you can see as explosions.