[Richard100]

The IMU will give you orientation (or pose), but it by itself does not provide position. You could combine some form of odometry with pose to calculate position but there are of course some technical challenges. Will your odometry maintain sufficient accuracy over time? Is your odometry effective when you encounter a disturbance (knocked off course)?

Simultaneous Localization and Mapping (SLAM) is at the other end of the spectrum of technical complexity. It will give you your position, but it's not simple.

Many Autonomous routines are quite successful with either assuming no disturbance (the GDC tends to keep opponent robots separated during Auto) or using routines with target tracking for mid-course corrections.