I didn't notice a biography of either artist on a quick Google search. In place of that, some links dealing with Fitzpatrick's career and work are here, here and here. Of particular interest is this link which features an interview with him.
The present post features images created by Fitzpatrick ("AF" was the signature he used) and Kaufman ("VK") for Pontiac's 1962 and 1963 Grand Prix models. Fitzpatrick mentioned that the new (for 1962) Grand Prix model's name implied Europe, so he and Kaufman researched European backgrounds they thought would be suitable for advertisements. In one telling observation, he stated that their Pontiac illustrations were unusual for the times because the people in the scenes were not admiring the cars, but instead were doing other things that fit the context of the scene being shown.
I include 1962 Grand Prix illustrations because that was the first year for that model. The 1963 cars were based on a new body (note differences in the windshield), and I consider its styling especially nice; a thorough repudiation of the baroque styling excesses of the 1950s.
Shown along the Corniche high route along the French Riviera.
Another Riviera setting, though I'm not sure where (Cannes?).
France, again. Note the Citroën Traction-Avant in the background.
Still in France, but again I can't pin down the location. Please comment if you know where.
Big change: Back in the good old USA.
This illustration might be from a brochure. Ditto the image immediately above it.
One source has the setting as the canal along the Loire River.
Might be Portofino. Note the sketchy style of both the car and background components. And the cyclist blocking part of the car: bold for a car ad then.
In front of the Hotel de Paris in Monaco, down the hill a short ways from the Monte Carlo casino.
On the Pont Alexandre III in Paris.
That's Paris' Opéra Garnier in the background.