Toy vehicle and interactive play surface

A method of interactively controlling the speed and direction of a toy vehicle on a play surface comprising the steps of:

• a) providing the toy vehicle, wherein the toy vehicle comprises:
• i) a vehicle body having a front portion extending longitudinally toward a rear portion;
• ii) a front axle rotatably coupling a front wheel with the front portion, wherein the front wheel has a front wheel contact surface having a first coefficient-of-sliding-friction;
• iii) a rear axle rotatably coupling a left rear wheel and right rear wheel with the rear portion, wherein the right rear wheel has a right rear wheel contact surface having a second coefficient-of-sliding-friction and the left rear wheel has a left rear wheel contact surface having the second coefficient-of-sliding-friction;
• iv) the vehicle body having a cavity proximate to the front axle;
• and
• v) a spherical rolling element rotatably positioned within the cavity, wherein the spherical rolling element bears only its own weight and extends below the vehicle body;
• b) providing the play surface, the play surface being configured to be hand-held and freely oriented in space;
• c) locating the toy vehicle on the play surface, such that each of the front portion contact surface, the left rear wheel contact surface, the right rear wheel contact surface, and the spherical rolling element contacts the play surface;
• and
• d) interactively controlling a speed and a direction of the toy vehicle on the play surface by tilting the play surface, wherein interactively tilting the play surface moves the toy vehicle forward or backward on the play surface and causes a lateral slip of the front wheel contact surface relative to the play surface to enable the toy vehicle to interactively turn on the play surface.

A method of interactively maneuvering a toy vehicle on a play surface comprising the steps of:

• a) providing a toy vehicle, wherein the toy vehicle comprises:
• i) a body having a first end extending longitudinally toward a second end;
• ii) a front axle positioned proximate the first end of the body of the toy vehicle;
• iii) at least one front wheel, the at least one front wheel being rotatably coupled with the front axle, the at least one front wheel having a front wheel contact surface having a first coefficient-of-sliding-friction;
• iv) a rear axle positioned proximate the second end of the body of the toy vehicle;
• v) a left rear wheel, the left rear wheel being rotatably coupled with the rear axle, and the left rear wheel having a left rear wheel contact surface having a second coefficient-of-sliding-friction;
• vi) a right rear wheel, the right rear wheel being rotatably coupled with the rear axle, and the right rear wheel having a right rear wheel contact surface having the second coefficient-of-sliding-friction;
• and
• vii) wherein the first coefficient-of-sliding-friction is less than the second coefficient-of-sliding-friction;
• b) providing a play surface, the play surface being configured to be hand-held and freely oriented in space;
• c) locating the toy vehicle on the play surface, wherein each of the front wheel contact surface, the left rear wheel contact surface, and the right rear wheel contact surface contacts the play surface;
• d) interactively controlling a speed and a direction of the toy vehicle on the play surface by tilting the play surface, wherein interactively controlling the speed and the direction of the toy vehicle comprises performing a rapid turnaround of the toy vehicle such that a lateral slip of the front wheel contact surface of the at least one front wheel on the play surface purposefully turns the toy vehicle on the play surface from a first direction to a second direction, wherein the second direction is substantially opposite the first direction, and wherein the left rear wheel and the right rear wheel spin in opposite directions during the rapid turnaround.