We've certainly been there already. The technology is widely available. We know how to do it. One of the stumbling blocks so far has been a readily available refuelling infrastructure. That's what's needed for these types of fuels. Whether they're electricity recharging centres or natural gas refuelling centres, they must be coincidental in the market to be successful. When that hasn't happened, progress on fuel for transportation has slowed or actually gone away in some cases. So we've missed opportunities.
As you've pointed out, whether they're commercial vehicles, large transportation vehicles, or even personal transportation vehicles, they will be part of the slate of technologies going forward. We cannot get around it, and we have a readily available source of fuel. It's a very good fuel. It will undoubtedly be part of the mix as we go forward.
I agree with you that the internal combustion engine is not dead yet. There are still opportunities for much greater improvement in that type of technology.