Sure. So I'll break that down into a couple things. So first, the controlled fleet trials. So, they've been going very well as we mentioned, GreenPath Logistics, Wegmans, Detmar, we've been able to execute upon in our running. And so from that standpoint, learnings have been really just tweaks to the control algorithms, how to make sure that our powertrain is responding to the driver feedback best possible. We've been very pleased with the reliability and performance of the trucks. We're very pleased with how that's going. So, overall, yes, it's going well and the feedback from fleets has been great. One other thing while we're on this topic, I will add is some of the fleets we've been working with have also had experience with BEV plug-in trucks. And it's been interesting. There's actually, they've been, they've had some BEV plug-in trucks there while they've had our truck there as well. And, happy to say that drivers have spoken very highly of what we're bringing forward. I will say drivers have tremendous range anxiety with BEV plug-in trucks. The range is just not there compared to what a normal diesel truck can get. And frankly even what's potentially being advertised of what the range of the electric truck is going to get, they're not seeing that. And so, we have heard from fleets, they've had instances of these trucks running out of battery power and having to get towed back home to be put on the charger. So that's something that we're not experiencing obviously with the Hypertruck ERX, they have plenty of range. They're using the existing infrastructure out there. So that's been good. And then second part of your question was on numbers of vehicles. So, the batch of vehicles that we're in right now, as we previously shared was going to be in and around that, 10 units out there. That's where we're at right now. And we're just to start about to start the build of the next batch of trucks, which is going to be around 20 more vehicles and then it'll be those vehicles that then bring us into the start of production in late '23. So, we're using the current batch, and we'll use the next batch in these fleet trials. And, yes, as I said, very pleased with how they're going thus far.