The shades-of-gray ad here is from 1974 and touts the cornering prowess of the Triumph Spitfire. The copywriter felt the need to educate the reader about cornering G-forces in a few words to make the comparison that followed as compelling as possible. It was also a subtle way of reminding potential customers that the whole rear axle tuck thing was now tamed.
Triumph's smallest car in the US at the time was actually modestly priced at $3,295.00, or a tad over $15,000.00 in 2012 dollars.
Happy 50th birthday Spitfire!