A valuation of $2.4 billion is being touted by "micromobility" brand Lime following the addition of a further $310 million in capital investment.
The company has now raised $765 million in less than two years, with all but $50 million coming in the space of the last 12 months.
The Series D round was led by Andreessen Horowitz, Bain Capital Ventures, Fidelity Investments, GV and IVP - all new backers - and participating again are Alphabet, Coatue, DCM, Fifth Wall and GGV Capital, amongst others.
Lime operates bicycle and scooter hire in North America, Europe, South America, Singapore and Australasia.
Subscribe to our newsletter below
The latest funding round, according to CEO Toby Sun, will be used to expand the business into other markets and develop both the team and technology.
It recently hired former-Nike executive Duke Stump to become its first chief marketing officer.
Sun says the number of its riding customers grew faster in its first 18 months than the entire ride-hailing sector did in its first two years.
He adds: "Micromobility is growing at a faster rate than we have ever seen, but the industry is still in its early days. As we move into this next phase of growth and adoption, Lime is committed to leading the way in collaborating with policymakers, the industry and local communities."