Almost perfect travel stroller/car seat

I've had this for over a year and it has been very convenient. As a travel stroller it has been great for inside the airport, into the cab and into the hotels, friends and family homes. Good for most city sidewalks but not gravel or cobblestone. You do have to be aware of the fact that you should not push the stroller off curbs, back down when possible. Small wheels in front so they do get caught in cracks and big grooves. Probably not a good idea to go jogging with it. I could see if someone were rushing they could jam the wheels on some uneven sidewalk or root and causing damage to the front wheels. Stroll with caution.
Since this doubles as a car safety seat it saves a bundle when renting cars. If you're able enough you can change it from a stroller to a seat in one movement saving a lot of time in cars, on trains and on buses. I didn't try it as a plane seat but saw someone else struggling with another brand and realized how this simple design was working much better for me. I've used it on four vacations and several weekend trips and found it very useful. I could never use my Bugaboo for travel like this.