Yellow 70 in Twolane Blacktop....

Just after the opening credits, when the `55 is pulling into what looks like a city park with picnic tables and such, on the right side of the street in a yard is a bright yellow `70. Has to be a 70 or very early `71, since the movie was shot in `70....
I've seen that movie about 100 times and thats the first time I noticed it. Later, when they pick up the girl at that cafe, you can see her getting into the 55 while the driver and mechanic are inside eating. A `70 Mach 1 passes by on the street out front, with another `70 Maverick coming towards it, this time blue. Probably more, but I just happened ot catch those....