I think in the long run, the need for cryogenics for LNG will be a a problem for highway usage. Of course, if you have LNG, then providing CNG is trivial. The reverse is "possible" but more difficult.
We'll just have to see how the market shakes out.
"LNG will become a fuel of choice for long-haul, marine and locomotive. CNG will be used more by residential and light commercial.
I certainly agree about marine and locomotive. I just see the split point at a somewhat different spot than you do. I certainly think that LNG is definitely not an option for passenger/light vehicle use.
I used to think the same myself. Then I learned that the tanks on the trucks/vehicles are both insulated and pressure rated that they can remain closed up and not in use for a minimum of 5 days without venting or requiring refrigeration input. I now understand this has been the minimum design requirement for some time now and manufactures having been meeting this criteria. In the stationary facilities, it is easier to manage. I've done some work years ago for LNG refueling on Metro Buses. While the equipment requirements are specific and with cost, it has become routine for several manufactures.