Yes, Season 1 had already been studied by thousands nerds as carefully as possible. But still, seems like even in pilot one can yet manage to find some more.
Several times in fans'talks on I-net I've met references to VW Beetle/New Beetle in SP3K, like in the quote below (from CGEF):
... One of the cars on the street before Fry and Bender enter the museum of heads looks like a Volkswagen Beetle. It swerves past a Slurm truck that was going too slow for the driver's liking, apparently.
Well, it's definetely not Beetle... If anything, it is a rare post-war BMW Isetta 300 - the main feature is the door on front side of it (btw, opening together with steering wheel), which is also seen in Futurama, but the smaller things - lights, body style etc. are also the same.
And one more thing, I spotted - we all know that misterious #9 guy, showing in several eps of Futurama, but did anyone see him in SP3K yet?