It is the second (now-we-can-call-it-annual) Eco Run, presented by the Automobile Journalists Association of Canada.
A covey of 23 journalists from across the country have assembled to drive a covey of vehicles which represent the industry's best examples of fuel-saving technology from our Nation's Capital to Montreal.
It's not just electrics and hybrids either, although they are well-represented here.
But neither type of vehicle has found much favour amongst Canadians - well, amongst anybody, really. Gasoline is just not expensive enough to make them worth the up-front cost, the fuss, the bother, and the unknown down-the-road reliability, repair and recyclng issues.
Besides, the strides made by gasoline-engine manufacturers are, as I have said before, the real technology story of this decade.
One of my mounts today - the Mazda6, a mid-size sedan with the company's so-called 'SkyActiv' technology which includes a direct injection gasoline engine - recorded a very impressive 5.6 litres per 100 km on a mostly-highway trip from downtown Ottawa to Chateau Montebello across the river in Quebec.
OK, so I was hardly lead-footing it as I - um - have been known to do on occasion.
Because the other goal of this event is to illustrate that by driving smart and carefully, you can save a boatload of fuel.
In last year's run, every single car was able at one point at least to meet or exceed its Transport Canada fuel economy numbers.
Accelerate gently, anticipate traffic slowdowns, coast down when possible, eliminate idling, keep your speed down - all common sense techniques, except that they aren't very common.
It was hardly scientific, but I also tried a few times to switch on the Air Conditioning while on a flat stretch of highway to see how that impacted the fuel economy. The 'delta' varied, but typically the 'instant' fuel consumption shown on the car's dashboard rose about 1.5 litres per 100 km. For example, 3.9 to 5.4.
Add that up over a long trip, and what price comfort?
One thing you can do on a really hot day is run the A/C for a few moments to cool the car down, then shut it off again.
In this shot, taken on the roof of the parking garage of the Chateau Laurier hotel in Ottawa, you can see the generator amping up a Smart electric car.
There's a Ford Fusion electric hiding in behind the Smart.
The Chevrolet Volt plug-in 'extended range' electric had just pulled out from in front of the Smart.
Incidentally, that generator is towed from venue to venue by a big ol' gasoline-engined pick-up truck.
Doubling the irony, the electrics were all the while blocking the gasoline cars from leaving - the white sedan to the left of the Smart is my Mazda6.
I rest my case...