Lexington should eventually get at least one HubWay in the Center for Alewife commuters.
Both Hubway and Zagster want you to think of them for spontaneous and errand trips, or for tourists going site-to-site, not for daily commuters.
To get political and local business support in a town for the kind of subsidization that both Hubway and Zagster demand, it seems you need to keep the bikes "in town" and improve the convenience of "shopping local" and not just be a boon to the 10 to 15 or so commuters it takes to empty the docks each morning (they come in 5 bike increments and ideal fullness no more than capacity-minus-one to allow an arrival to dock)
Hubway's network assumes a station-to-station web of trips, with stations being "near enough" to businesses that they can picture customers using them.
Zagster has grown by supporting work-"anyplace errand"-work (and use their
self-locking system at the "errand" end, rather than a station). This works better in less-dense places and/or for One Big Employer (where bikes get you "off campus" or "across campus")
By contrast, if you plan to commute "that far" and "that regularly" by bike, planners want you to buy a bike, and the correct "public facilities" response is to increase Pedal-and-Park cage capacity.
Hubway tries to avoid stations with 100% commute-direction demand because a lot of human labor goes into:
- re-stocking home-end stations during AM start (avoiding depletion)
- unclogging work-end stations at the end of the AM rush (to ensure some empty docks)
- re-stocking the work-end stations during the PM rush (to avoid all-empty docks)
- and re-stocking work-end stations to support evening errands
Zagster is probably the better option (for now) for Lexington, because "stuff" is just a little more spread out, and it is hard to put a dock everyplace you want to go.
Arlington will probably focus its Hubways on Mass Ave--maybe the Rink/Summer St--rather than the bike path--when locating its stations to de-emphasize commuting and make shopping/Post Office/Town Hall stuff more the focus.