Question: What was the first car fitted with an alternator, rather than a direct current dynamo (a type of electric generator)?
Answer: The first car with an alternator was the Plymouth Valiant in 1960.
Alternators had a couple significant advantages. They weighed about 10 pounds less than the generators. Also, alternators could charge while the car was idling, which meant no more dead batteries when waiting in heavy traffic. A HUGE advantage for those cold winter days and nights!