Autocar reported that Gordon Murray, Shell and Geo Technology have designed a three-seater city car capable of 100 mpg. And they have no intention to build it.
After a fascinating lead in with a fistful of interesting insights on how to get an engine to eke out the petrol, this sentence appears: “There is no intention to bring T.25S to market. It is a ‘capability for analysis’ vehicle, said Shell Lubricant’s innovation technology manager.”
The T25S is a revision of Gordon Murray’s T25 concept which is also not in production. The technical aspects of the engine are quite numerous, by the way: a friction-busting diamond-like coating (DLC) which was applied to the camshaft, tappets and piston skirts; the design of the retainer and valve springs were changed and titanium valves were installed due to the lower engine speed; a new piston was designed, the piston skirt was shortened and the contact surface with the cylinder (which reduces engine friction); the engine has fewer…. but they aren’t going to build it… and the connecting rods extended by nine per cent. The car, which is not going to be made, is to be tested by Shell for some reason.
Here’s a link to definition of something called vaporware.
Presumably some of these ideas could be deployed on other engines, so maybe something will come of this. Right now it simply looks like a marketing exercise by Shell to remind us how their oils are super good.