The F-Type and Range Rover have been displayed before but take on new relevance for the expanding firm in California, the biggest and most lucrative car market in the world.
In California - unlike the wider American market, in which the Big Three (GM, Ford and Chrysler) have 45 per cent of the market - European cars often outnumber US-badged cars, says JLR's North American president, Andy Goss.
"It is a really important market for us and Los Angeles is second only to the New York area for us in terms of Range Rover sales."
Jaguar has had a tougher time in America because of reliability problems, a poor choice of engines and a lack of all-wheel drive but the F-Type and XFR-S mark the start of a new offensive in which the XJ and XJ models get V6 engines (previously they'd had only the larger V8) and all-wheel drive, a crucial item for American luxury saloon buyers.
Jaguar design director Ian Callum, who created both cars described the XFR-S as "something very special".
He also suggested that he'd like to give the new F-Type a hardcore version to rival the Porsche GT3 high-performance sports car.
-Independent