Ummmm....
There's a few 100th anniversaries being celebrated around about now, depends on how much latitude is allowed.
Evinrude outboard motors for instance, 2009 is there centenary year - some of the weather I've experienced over the years suggests they SHOULD have had a LM entry! - but I don't think it's them

Harley Davidson are celebrating 100 years of their V twin engine, not much of a bike aficionado, so not sure if there's a LM connection, but it ain't a car!
GM has just celebrated their 100th, but that's not 'a car', so much as a brand. That said, there was a special edition 100th anniversary Corvette made, and there's a definite LM connection there, and a LM history with Cadillac (very fond memories of the safety cars a few year ago - best sounding motors on the track!).
Now the prospect of an Aston Martin - Lagonda theme really gets the juices flowing, absolute heaven. But the dates are a little on the flexible side, so that's got to be a definite maybe!

It you take Termi's words literally, looks like the 'Dagenham Dustbin's ' Yankee forefather it could be then - damn!

Termi - you wicked tease, you can tell me, I wouldn't tell another living soul (no one I know has a soul, they all sold them to a old chap called Nick years ago!

)
TC