Oh come on, American station wagons are massive! Well, at least they used to be, they don't make them like that anymore, instead they make SUVs. My family has a labrador (maybe not as tall as a greyhound but a lot bulkier) and a Vauxhall Omega estate, which has plenty of room for him in the back, I'm sure we could fit another labrador in or even a third. And the Omega is not a large car by American standards (in Europe it is), wouldn't a Taurus wagon have just as much room? Or get a Volvo, the V70 probably has as much room as the Omega, though I'm not totally sure. The Omega used to be pretty much the most spacious estate car in Europe, the only cars that really matched it were the Mercedes E-Class estate, the Volvo 740/940 was probably even bigger, though they stopped making them ages ago. I think you should get a Volvo V70. Or the older 940/960 if you need something cheaper. Or even one of those gigantic old American wagons, if you're OK with running an old car. If I was in your situation, if there was a way of getting a car that would suit my needs without it being an SUV, I'd do it. But it's up to you, it's your right to buy whatever you want.