That's why I drive a Jeep. I had to fit my Ampeg 8x10 cab in the back last night for a gig. I can fit an Ampeg 8x10, a VHT Fatbottom 4x12, and still have room for the guitar amp, bass rack, both pedalboard cases, 2 instruments, a keyboard, mics stand, and keyboard stand. Then, if I didn't have a passenger, I could still fit our merch tote and my kazoo amp in the front seat. I'm not sure, but I bet if I take the spare tire out, I could probably fit 3 4x12s back there without taking the back seat down. I would never gig without a spare though!