goolge map core functions:
search
 autocomplete 當地文字 vs 你的語言 (ie 人在日本用 google map:  japan vs 中文或英文)
 category: search with both names and categories
 business details: open hour

save
 create a class and save into it

directions
 A to B via car, bike, walk, public transportation
 add destination

Sreet View

Layers