Universal splicing track and toy car

A universal splicing track and a toy car, comprising a plurality of 8-shaped track bodies which can be assembled end to end and a toy car mounted on the track bodies, wherein a lower end of each track body of the plurality of track bodies is provided with a base having a left side, a right side, a front side and a rear side, and an upper end of the base is provided with two first step surfaces and a lower end is provided with two second step surfaces;

• one of the two first step surfaces is provided at the left side and the rear side of the base, the other one of the two first step surfaces is provided at the right side and the front side of the base, one of the two second surfaces is provided at the left side and the front side of the base, the other one of the two second surfaces is provided at the right side and the rear side of the base, the two first step surfaces of one base are overlapped with the two second step surfaces of another base, an upper end of each track body is provided with a bar-shaped block extending from the front side to the rear side, one end of the bar-shaped block is provided with a connecting body having a partially spherical surface, and the other end is provided with a connecting groove matched with the connecting body;
• and both sides of the bar-shaped block are provided with racks, a power mechanism is arranged on the toy car, the power mechanism is provided with an output gear meshing with the racks at the two sides of the bar-shaped block, planes where the racks are meshed with the output gears are perpendicular to the base, and one end of the output gear is provided with a guide wheel for clamping the bar-shaped block.