Therefore, assigning a monetary value is impossible because:
* No single "first car" exists: Different inventors created vehicles with varying degrees of functionality and completeness.
* Historical context: The value of early automobiles isn't based on market value in the way modern cars are. Their worth is mostly historical and cultural. Any assessment would be speculative.
* Condition: Even if we picked a particular vehicle, its condition would drastically affect its potential value. If it were even still extant, it'd likely be priceless in a museum.
In short, it's a question with no objective answer.