I'm glad to have you here in the Community, @dbeck23. Let me share some information about removing the vehicle from your account.
QuickBooks Self-Employed will automatically create a default vehicle. Please know that the option to remove this is still unavailable unless that vehicle is non-primary.
With this, you can leave the vehicle as it is, for it will not affect your data. However, if you want to delete it, you can submit feedback. Your feedback will be highly appreciated because it can help our Product Development team determine which features to implement in the next update.
Here's how:
Navigate to the Assistant menu.
Type send feedback in the field.
Select Add a feature.
Input a brief description of your feature request and then send it.
Once done, click Yes.
Additionally, here's some article to learn more about mileage tracking in QBSE: