Trik-Trak
The Dare Devil Trik-Trak system ("The Trik is in the Trak") was based on the observation that if you had a battery-powered car steered by sidewalls on a set of plastic track, the straight sections between the curves weren't actually necessary. Strictly speaking, all you needed was a set of curve pieces laid out on the floor, each of which would "catch" the car and aim it towards the next piece in the chain.
Play
A Trik-Track layout didn't need special crossover pieces, and could make use of an entire room, directing the car under beds and chairs and tables. Part of the play value was then carefully adjusting the corner-curve pieces so that the car hit its target every time and returned to its starting point to repeat the process. To make this easier, track sections had one "flared" end, with curved wider-spaced walls at one end to accept cars that were slightly mis-aimed, and funnel them back onto the correct path. Placing a straight between two distant-placed curves made it easier for the car to stay "on target".
Pieces
For further play value there were novelty track sections that could be set up along the route, a "somersault" ramp, bridge/flyover sections, a "teeter totter" ramp that tilted over once the car had climbed halfway up it, and a "wall of logs" that the car could break through.
The sets included a pair of battery-powered cars, and some press-out carboard scenery, including a card model of the iconic "Dunlop" motor racing bridge, shaped like a half-tyre.
