Definitely. The code here assumes that the vehicle's vector is perpendicular to the optical axis. If you had enough information to calculate the vector it wou

Definitely. The code here assumes that the vehicle's vector is perpendicular to the optical axis. If you had enough information to calculate the vector it would just be a little extra trig to measure the relative speed minus the offset of your vehicle's instantaneous speed. This is easy for side to side movement, a little harder in the depth direction - though you could get some depth info by comparing the size of the car contour at two or more snapshots (smaller indicating that it's moving away). The framerate/resolution of the RasPi setup probably wouldn't make it a good choice for this though.