Massive ass front window, cold A/C, fast doors, and as fast as hell.
The ENTIRE MTA management deserves to be hung from their ballsacks for retiring this brilliant piece of railcar engineering and replacing it with a shitty dried out armadillo crap called the R160.
R40 Slant can be used to describe anything awesome beyond any other possible description.
Person 1: "Yo man i had sex with 12 girls last night one after another!"
Person 2: "Damn son I'm jealous that was mad R40 Slant"
Person 1: "Dude I just won 149 Million dollars in the lottery, bought an Audi R8, and the economic crisis ended instantly!"
Person 2: "R40 Slant."