Practice has now been added to lap times

I set a fairly easy to beat benchmark time for each lap using a car with speed set to the lowest.

Initial Benchmarks 30/1/2021

Colorado Indy 200 - 21s 500ms Vegas.Com 500 - 30s 820ms Mall.Com 500 - 30s 240ms Orlando Indy 200 - 21s 420ms MCI Worldcom 200 - 29s 010ms Visionare 500 - 30s 710ms Indianapolis 500 - 49s 860ms Longhorn 500 - 29s 510ms Radisson 200 - 21s 120ms Kobalt Mechanics Tools 500 - 29s 980ms MBNA Mid-Atlantic 200 - 22s 650ms