Fair enough.
I don't have the figures off the top of my head.
A natural gas motor is not going to convert the energy at the same rate, but there are range challenges associated with using electricity to drive major route trucks and that kind of thing. Looking ahead at innovation in the transportation sector, we saw natural gas being an appropriate and significant interim step until we get to the point where we can use other forms of drive.
The percentages should be in this document, and if they're not explicitly there, I'll make sure they're provided to the committee.