Just want to echo everything
@DisgruntledSanta said!
We have the same Graco Snugride 35 and daily drive the SE with our now 10 month old in the backseat. I think we'll use it up until she's a year and a half or about 20 lbs, when I imagine it would be too heavy and awkward for me to regularly pull out the backseat. After a year of pushing the passenger seat back and forth, a slightly annoying thing is that it now likes to slide back in its track and I have to hold it while putting the carseat in. Also, when the child seat is rear-facing, the front passenger seat needs to sit more upright unless we rotate the carseat handle up. But my 5'3" wife likes to sit in the backseat with the baby anyways.
Also mad props for taking the baby on a 2k mile road trip in the mini... I asked wifey, but she vetoed. Fortunately baby is a great flier.