I'm in Australia and it just randomly showed up 2 weeks ago for me.. I didn't even know that Google Now had a "where you parked" card until it showed up in G. Now... my inner conspiracist feels slightly uncomfortable with this constant tracking
Nexus 7 2013 (Flo)- PAC ROM 4.4.4, ElementalX kernel
Nexus 5- PAC 4.4.4
HTC One X (endeavoru)- CM 11 (retired)
Sony Tablet S (retired)- stock 4.1.2