Darracq 25.5 liter

[aeronca65t]

I love the Edwardian-type cars seen at various British hillclimbs.
Here's a 25.5 liter Darracq running at Prescott.
Apparently it had burned to the ground previously, but has since been renovated.
It's 107 years old, has just small rear brakes, an engine with 1530 cubic inches and can do 110 mph. Probably take guts to drive this thing!

I also like the smaller, vintage hillclimb "specials".

 

[JPSmit]

Probably take guts to drive this thing!

and brown trousers

 

[JodyFKerr]

Probably take guts to drive this thing!

and brown trousers

Well, if they aren't brown when you start out, they'll likely be brown by the time you finish!

 

[waltesefalcon]

That monster must be an adventure every time you fire it up.

 

[Banjo]

Is that last one running a vintage Harley engine?

 

[aeronca65t]

Is that last one running a vintage Harley engine?

I would guess that's a J. A. Prestwich ("JAP") motor.
These were common on some classic British motorcycles (such as the Brough Superior) and were also used on 3-wheel Morgans.