I have commuted for years on the Express bus from Ewa Beach to downtown Honolulu with total transit time of 42-50 minutes depending on traffic. That is from a bus stop 50 yards from my home and then to an office building 50 yards at the end stop. Able to listen to music and sleep most of the time along the way. 
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This is a perfectly working, highly convenient commuter bus system the Rail Mafia wants to destroy and spend $500 Million a mile to lard up contractor bank accounts. It will take twice as long with the bus-rail-bus con job and certainly well over double the cost.
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$500 Million a mile to take less than 2% of the cars off the H-1 and by 2020-25 Smart self-driving electric vehicles will be freeing up lane space and creating virtual hot lanes.
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Keep in mind the MINIMUM the HART rail expects to have a working rail system "as planned" is Dec 2025 and most likely after $20 billion spent it will "maybe" be 2028-29.