Skylab launch weight, according to NASA: "about 100 tons." Thanks for the precision, NASA. Some of us non-eggheads are pretty smart, go ahead and hit us with hard data, we can take it.
That said, it's hard to find curb weights for 40-year-old cars, so the weight I'm using is for a Buick Skylark, since it's from the bread and butter "intermediate" size range and I could find a weight for it: 3491lbs.
100 t= 200,000 / 3491 = 57.29 Buicks. Call it 57, and a horse blanket in the trunk of each one. Gonna need insulation, it can get cold/hot in space.
57 Buicks x 867mpg = 49,419 miles per gallon per Buick.
That's pretty good, no matter how you slice it.
But if Heavy Metal has taught us anything, we're actually going to need Corvettes