In late 1962, he was back in Timaru and for three years ran Hatton & Son's garage and service station before returning to Dominion Motors in a sales role.
Watkins is ending his career as principal of Watkins Honda and Nissan, but his first contact with Honda was in Timaru when the first two Petone-assembled EB Honda Civics arrived.
His career then involved working with NZ Motor Corporation, selling Morris 1100s, Allegros, Maxis and Princesses and then Hondas in South Canterbury.
But when Taranaki-based Farmers Co-op bought the NZMC vehicle branch in Whanganui, he moved his family north in 1977 to manage the operation.
He eventually became chief executive officer FCOS Motor Division.
FCOS quit the motor industry and local man Peter Elliston bought the Honda outlets in Whanganui and Marton.
Watkins bought into Elliston Motors and subsequently formed L W Watkins Motors in August 1988, and with it the Honda franchise.
The current site was developed on the St Hill St-Dublin St corner, and the dealership blossomed.
An approach from Nissan NZ in 1994 saw a successful dual franchise begin with Maxima, Bluebird, Sentra and a 2.7 Navara ute being the first new models which Watkins Nissan sold.
He was active within industry groups, serving as president of the Whanganui MVDI branch and was on the MVDI board when the merger with MTA was forged in 2003.
Obviously six decades in the industry has brought with it massive changes to motor vehicles and Watkins has seen plenty.
"I remember the introduction of seatbelts into cars in 1965, but you didn't have to wear them. Then in 1971 Motor Corp's new chief executive decided that to launch the new company, they'd fit two front seatbelts to anyone's car for $25.
"There was a guy in Timaru, a Scotsman. He had an MG Magnette, and he came in and asked for one seatbelt for $12.50.
"We told him we couldn't do that but I asked why he only wanted one.
"He said, 'When I'm going home on a Friday night from the club I could belt myself in and if a cop stops me it would save me falling out of the car at his feet'."
They are memories that Watkins will take with him as he enjoys a well-earned retirement.