Hello, I've been working on a robotics startup (www.agrbt.com), and we've developed a robotic cart that can follow you like a dog while carrying several hundred pounds. Below is a video showing our robot in action on a farm, and another in a city. In a city running around: In use moving firewood: Whenever I walk through Philadelphia or New York, I see a lot of UPS 2 ton trucks/vans parked, with people running packages back and forth on push carts from the trucks/vans. Could anyone imagine our robot following them around in deliveries rather than them having to push them? Any feedback on our prototype and how we might make it a helpful tool for a UPS driver?