Sound Ledger: Go-karts, SoundHound, leaf blowers

100: Number of noise complaints in Tokyo in 2023 due to go-karts

346: Percentage return to holders of SoundHound shares since start of 2024

2028: The year Portland, Oregon’s leaf blower prohibition goes into full effect 

Sources: Go-karts: japantimes.co.jp. SoundHound: forbes.com. Portland: portland.gov