I just got a new pram, the Baby Jogger city elite (sort of a cross between a stroller and a pram but I call it a pram), as a general rule I find prams badly designed and this does have some things that I think could be improved, but two things are really superior on it: the locking mechanism, and the folding mechanism.
The Locking mechanism is the less impressive but still useful, most locks on a pram are done by the foot and you have to push down on a bar or some other lock near the wheels and then when you want to start you need to kick up on them. Fair enough, although obviously now you are putting your locking mechanism near the area most likely to get dirt and rocks in to wear it down, and other potential ways it can be damaged.
Furthermore since you are using your foot to lock and unlock it can be something of a hassle because let's admit it, most people are not very
good at manipulating things with their feet.
The city elite locker is by the handle, you can pull it up to lock, pull down to unlock. That's nice. You can easily see if it is locked, because it's at hand level not down at foot level, you use it with the part of your body most people use for manipulating objects - the hand - and finally it is unlikely to be damaged because you ran over some big rock.
The folding mechanism is the impressive part, in the middle of the seat is a thick strap with some instructions on - I think it says 'Pull up to fold' but I'd have to go down to check the exact wording. When you pull up by this strap magnets on the sidebars of the pram are released somehow and the pram folds in half automatically.
Yesterday I had to take a taxi with it, when the taxi driver saw this action his eyes bugged out and he laughed and said "now that's smart" (in Danish though) he commented on how he had a lady the day before who could not figure out how to close her pram and mine was so easy. Indeed some of our previous prams have been so irritating to fold that my wife generally left it up to me to do. It is equally easy to unfold.
Everything has a downside, and this ease of folding means that sometimes you can be doing something with the pram and accidentally start the folding process, but because it is easy to unfold you can stop it as you feel it starting and put it back right. Believe me, this sounds more irritating and problematic than it actually is but I figured I should note it anyway.