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spotted

Spotted is Globe Drive writer Peter Cheney's weekly feature that takes you behind the scenes of his life as a vehicle and engineering journalist. We also highlight the best of your original photos and short video clips (10 seconds or less), which you should send with a short explanation. E-mail pcheney@globeandmail.com, find him on Twitter @cheneydrive (#spotted), or join him on Facebook (no login required).

Wolfgang Pollmann

The Saskatchewan School of Aerodynamics

Designing an effective automotive spoiler usually calls for extensive wind tunnel testing. Or you could just buy some pressure-treated lumber at Home Depot and see how it goes. Reader Wolfgang Pollmann spotted this masterpiece a while ago at Preston Crossing Mall, in Saskatoon.

Wolfgang Pollmann

Yes, I did make it myself - why do you ask?

Engineers at companies like McLaren and Porsche spend years integrating aerodynamic spoilers into the design of their vehicles. Airfoil profiles are tweaked, load paths are calculated, and downforce is matched to suspension rates. In Saskatchewan, they take a more pragmatic approach.

Wolfgang Pollmann

“At 200 km/h, it really starts to work…”

As you may know, spoilers are designed to keep a car stuck to the road by developing negative lift. This requires that you set the leading edge lower than the trailing edge. Or you could do it like this guy, so your car’s tail lifts off the ground as speed builds. With any luck, the screws will pull out before you crash.

Peter Cheney

A vision of Porsche's future, from the past

Although Porsche built its name on rear-engine, air-cooled cars like the classic 911, the German maker knew that survival depended on diversifying its lineup. The 924 coupe, which was produced between 1976 and 1988, set the pattern for future cars like the Panamera, with a front-mounted, water-cooled engine that tamed handling and reduced emissions. The 924 was also the first Porsche to be offered with a fully-automatic transmission. I spotted this one in Toronto.

Peter Cheney

Period details

When the 924 came to the market, car manufacturers were wrestling with newly mandated safety items like impact-absorbing bumpers. The 924’s protruding, beam-style front end was typical of the period. So were the flip-up headlights.

Peter Cheney

The original designer Cadillac

The Cadillac Allante is an odd duck. It was produced between 1986 and 1993 as part of a partnership with Pininfarina, an Italian coachbuilding firm noted for designing a series of iconic cars, including the Alfa Romeo Giuletta Spider. Allante bodies were built at Pininfarina’s Italian plant, then shipped to Detroit in specially equipped Boeing 747 freight planes for final assembly at a GM factory. I spotted this gold Allante at the Gentry Lane classic car dealership, in Toronto.

Peter Cheney

Time Machine

The Allante’s interior takes you on a trip to the late 1980’s, when angular shapes and analog switchgear were the order of the day.

Peter Cheney

One seat, six switches

Digital controls have dramatically reduced the number of buttons and switches in a modern car. The Allante’s power-seat controls are a reminder of the way things used to be.

Peter Cheney

Ready for the apocalypse

Jeeps make no sense in an urban environment, but they do have their own rugged allure. Should the zombie apocalypse befall us, a four-wheel-drive vehicle with locker differentials and massive ground clearance could make all the difference. I spotted this heavily accessorized Wrangler in Mississauga.

Peter Cheney

Das Jeep

That black pipe on the side of the windshield is an intake snorkel that directs air to the engine. This allows you to ford streams so deep that your engine is submerged. If you live in Canada’s largest urban center, you may not be using this feature on a regular basis.

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