I've mentioned this before but, how many technologies do you see companies working on where they say, "well we have one approach we think is gonna work, but we'

I've mentioned this before but, how many technologies do you see companies working on where they say, "well we have one approach we think is gonna work, but we're also going to spend a ton of resources and time developing this other solution that we don't think is going to work, that would be useless if the first approach does work. Oh and it would make our cars 5k more expensive at least."