The bike-sharing wars have escalated. What started as healthy competition between two powerful, well-funded Chinese companies and a handful of scrappy American upstarts has intensified into a trash-talking land grab involving electric scooters, electric bikes, and plenty of Silicon Valley-style ambition. In October, LimeBike the favored competitor of Silicon Valley venture firms Andreessen Horowitz and Coatue Management, raised $50 million in funding.

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