Aaron [ph] I'm still - we came up with that 2,500 number because that was just doing math of about $40,000 per truck and our friends at Total had helped us with debt for about $100 million, but I still think it's a good number. It's one that we're shooting for. We've been at it for a while, started in late summer last year. It took us a while what the gaining factors are, it took us a while to basically re-educate fleets. Kind of you think with me on that, what happened was. You have to go back a couple of years, collapse of oil price with really the previous heavy duty engines some of which were the earlier engines and some of the experience was, we had some of the early adopter problems with some of those engines, this of course is now is a new day with the new 12-liter low NOx engine and of course today we have the renewable natural gas. And so when we came out with the Zero Now financing, we needed to go back and really educate fleets about the current state of play. The current engine technology, what was different this time, we had to explain the Zero Now financing and why they could now move into natural gas truck at essentially the same price as diesel, explain the hedge which you know is a very attractive as we've discussed before on this call. Is we're able to lock our customers into a fuel deal at a depending where the operators much as $1 a gallon fixed to EI index for the length of that lease, in many cases four to five years. It's very attractive. This bill takes a while and before we can end up assigning the deals. It takes several steps and then after order the trucks, right? And sign a fuel contract with us, which is new and so I'd like to say there really aren't any showstoppers here. It's really [indiscernible] education and it's one that we've continued to do. We've continued to increase the pipeline so I'm feeling good about that. I monitor it regularly with our Vice President of Sales. And the pipeline continues to grow that is the number of fleets that are entertaining purchases of trucks, but then we have to move through the process, so that release couple of days ago, got you to kind of where we are today and as what I mentioned today, is we've got more than we're in negotiation process with, negotiation and contracting phase today. So I'm feeling pretty good about the way that's going, but - this is buying a real truck for $125,000 committing to five years' worth of fuel, even though it's at a discount. This isn't putting down an order, this is a reservation, this is buying stuff. And so in many cases when we're talking 20 or 30 trucks you're in [indiscernible] millions dollars. So these guys take it seriously, they're faced with higher diesel price today. I note that today diesel in the Port of LA with $4.09 so we have a very competitive price. So I hope that maybe helps. We still - I think 2,500 truck number is a good number though, it will take us the entire year to get to that number and of course you won't see all those volumes this year, but you'll begin to see it in next year.