I think the most common way to call it would be "utility trolley" or "utility cart". Usually the ones you'll see in the U.S. are all metal and can fold up to ma

I think the most common way to call it would be "utility trolley" or "utility cart". Usually the ones you'll see in the U.S. are all metal and can fold up to make it easier to put them in car trunks or carry them on buses.