Sure I can.
Performance is up against current-generation diesel. Diesel without all those encumbrances is not an option anymore. That's a non-compliant vehicle. With the new heavy-duty vehicle regulations in Canada and the U.S., the first section is the next four years, and we know that off-the-shelf technologies will do it, in terms of compliance. It's going to get a lot uglier for the manufacturers beyond four years because they are going to have to develop the technologies to comply with diesel. Natural gas right now already gives you an almost 20% benefit on GHGs, which are now regulated.
So, no, all those comparisons are head to head. In terms of the power and torque lines, they totally map where a diesel truck is at this point, understanding where we do have gaps with natural gas. We don't have as many engines, we don't have as many models, so there are gaps in the power spectrum. You can't get anything above 475 horsepower right now with natural gas. This new engine coming in is going to plug one gap in the spectrum, but you can't go below 250 either for more of a medium duty.
So those things are going to be plugged. But head to head, if you take an ISL diesel versus an ISL G natural gas, you're going to find the same lines, in terms of power and performance.