yep, they make great pets, are real low maintenance as they are basically couch potatoes that can run at 40mph when they feel like it.
whippets are a bit more energetic than greyhounds - my 2 greys sleep 22 hrs a day, go for three 1/2 hr walks (during which the male will run franticly for about 10 min in about a thirty foot radius around me & the female (she sometimes gets fed up & puts him in his place, she's a year older).
the remaining half hour is spent eating & playing with their toys. they will make an exception if visitors arrive, or if a puddytat tries to go thru the garden.
they both will get really wound up if a small furry anything is in range (they can see a rabbit at 1/2 mile). saw a deer in the field up ahead of us a week or so ago on one of our walks, it looked at us for the longest time as we approached.
it finally figured out the 3 deer me & my friend were walking were actually a bit more carniverous (they do look like deer with long tails from a distance). it finally took off - that got the doggies real excited.
my dogs were leashed, but hers took off at about 30 mph after it, if it hadn't been about 50ft from the tree line & us 100 yds away, he would have caught it. (he's caught one before)
her dog is a lurcher (greyhound cross) so is a few mph slower than mine (millie, my female averaged 36.02mph over the quarter mile in one of her races (she won at 10:1) before she retired last year) (480meters in 29.81 sec to be precise)
(the two with doggie goggles were not mine, mine don't have them yet) these are my two landsharks - in bed as usual.