I had the Garmin maps and software on my Windows 6.1 HTC, I would guess one of the issues with moving that to Play, is the relative prices that Garmin asked versus the typical Android app.
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'11 Yamaha YBR125G (cheap and very cheerful
'12 Zongshen Fly / Motorstar MSX200-II (biggest-fun-to-dollar ratio of any bike I've owned)
'03 Honda VFR800 (sold)
'06 Husky TE610 (gone)