What was the car's name in Nanny and the Professor?

The car, which stood out as this was a contemporary, not old-time series, was a Model A Ford convertible roadster, two place. It belonged to the professor. Vintage Cars are OFTEN effected by Academia. When I was in high school the Principal had a thirties Rolls-Royce and the science teacher a l937 Cord.

The car was named "Arabella" after Nanny's aunt.