plastic tarp or blanket for each team

This can be done inside or outside on grass, but not on rough ground.

Each team of 3 players gets a tarp or blanket.
One scout sits on the tarp while each of the other two hold a front corner.
On 'GO!' signal, the teams race around a course and back to the start line. There, they switch positions and race another lap. Each scout pulls twice and sits once.
If the chariot rider falls off, the chariot must stop and wait for him to get back on.

Can add challenge by having riders keep their arms crossed in front of them and not grabbing the tarp.