Select Vehicles menu option.

Choose a Filter Name (e.g., Model).

Choose a Filter Value (e.g., Challenger). Or, type in your own search criteria in the Search Filters box (e.g., 'Ch', which will select all Models containing 'Ch', such as Charger, Challenger, Chevelle, etc)

Add additional Filter Names and Values to fine tune your search.

Switch to Vehicle 2, and repeat the selection process.

Adjust your Racing parameters.

Change roll racing speed, tire type, launch time, and many more by selecting Racing menu option.

Click-n-Drag on the chart to zoom in