Absolutely. So you mentioned car velocity, so let's start there. As you're thinking about 2024 and what's in front of us, you saw what we did in the fourth quarter, a 14% improvement, 217 miles per day. That becomes a floor. A floor that is we work every single day, as was mentioned before, we're working to improve that. Now if you peel that back and you say, okay, within that, where do you see the biggest opportunities? You mentioned train length, so we can start there. Train length is an opportunity, always has been and candidly always will be because the railroad is dynamic. Train length comes in two forms. The first one, Kenny just gave a great example of Inland Empire, where we're bringing more volume onto the railroad. I already have an existing train, and we can just tack it onto the back of that. The other way that it comes is in our actual transportation plan changes that we make. An example of that is the one that Kenny brought up with Mexico. When you think about that being two trains before and now we're consolidating that traffic into one, it allows us to drive productivity that way. After that, the fluidity drives our locomotive fleet. There's other factors, but at the very core of it, it is about fluidity. We took out 500 units out of the system in the second half of last year, a little bit because of volume, but the vast, vast majority of it because of fluidity, continuing that work allows us to continue to rightsize the fleet. And we don't talk a lot about purchase services on these calls, but purchase service is a big opportunity for us, whether you're thinking about how many vehicles do we have on this railroad to operate it, whether we think about how much fuel that we're using. We also have opportunities on the casualty side. As Jennifer has mentioned many times before, it's an opportunity all the way from the safety side. That's why we're so focused on safety as well as even as we think about our service product, right? We have teams that are dedicated to making sure that the freight that we haul is successfully hauled from origin to destination without being damaged and how do we drive down any claims that we have. So it is a target-rich environment, and we are doing everything every day to capitalize on that.