RR - Slanted perspective.

In the late '60s and early '70s, San Francisco's BART and the New York City's subway both experimented with cars with slanted fronts. They looked cool, however, the benefits of such streamlining are dubious when you consider the relatively slow speeds and extensive tunnel operation of subway trains, and the loss of passenger space because the full length of the car can't be used. Worse, such a design makes it especially dangerous (as in NY's design) or impossible (as with SF's) to walk from car to car if the cab cars are run mid-train. The problem was bad enough that New York modified the original design to get rid of the slant before they even received all the cars.

Despite these problems, however, Toronto is now--based on the picture in an online CTV article--considering a slanted-front subway car design. Once again, we have an example of Santayana's quote "Those who cannot remember the past are condemned to repeat it."