//Vehicles featured included the swamp vehicle Dragon Tank at Crab Key; a marine blue 1961 Sunbeam Alpine Series 5 Sports Tourer convertible II Tiger rental car which James Bond drives whilst being tailed by a pre-war Packard LaSalle hearse; Bond rides in a taxi driven by Mr. Jones which is a black 1957 Chevrolet Bel Air convertible; a motorboat; Mk II Ford consul taxi; Quarrel's boat; an Austin A55 Cambridge and a Ford Zephyr.//
This is the most information I could find. Though it does not talk about a group of people.
The Jamaican Commissioner Duff's car. It is seen in a very short scene, where Bond is chauffeured to Strangways' house from Government House.
The Ford consul II was in production 1956-1962 by Ford in Britain. 371.585 fixed roof and 9.398 convertibles was produced. It was a sub-model of the Zephyr