As the name suggests, a studio cart (a.k.a video cart or tethering cart) is a cart for your studio. Duh. As your studio grows and you need to move things around, a studio cart can really help your workflow. Obviously, it can help when you move things around. But there are more benefits. For example, you can mount a laptop, a camera, or a monitor on the cart, making it a portable shooting setup.
The only issue is that those film carts don’t come cheap. Even the most basic cart from brands like Inovativ or Proaim can set you back a good amount. And to be honest, those are incredible carts with lots of features. For example, they fold down for travel and have a massive set of wheels. But for studio use, where you don’t really need to break anything down or have massive wheels, you can save quite a bit, while having a super-sturdy, super-functional cart.