Welcome back to TechCrunch Mobility, your hub for the future of transportation and now, more than ever, how AI is playing a part. To get this in your inbox, sign up here for free — just click TechCrunch Mobility ! After years of hints and preparation, the Uber-backed electric bike and scooter rental startup Lime filed for an initial public offering . A micromobility company going public? In 2026? Surely it’s the wrong year.  Lime CEO Wayne Ting has been talking about an IPO for years. TechCrunch spoke to him about it in 2020, 2021, and 2023. It never materialized and I sort of forgot about it, until — boom — the S-1 doc, the registration statement filed with the U.S. Securities and Exchange Commission, posted early Friday morning.  There are some interesting risk factors in the S-1, although we still are waiting for Lime to share terms of the offering.…