Infinite Machine Olto review: A strange ‘e-bike’ or an urban transportation revolution?

This one is outside what Retrofit Relay covers. We write about home energy upgrades — insulation, air sealing (blocking drafts that leak heated or cooled air), heat pumps, windows, and the rebates and tax credits tied to them. A review of a $3,495 electric moped-bike hybrid, however interesting, doesn't touch your house's energy use or any home efficiency program.

If you're weighing an actual home upgrade — a heat pump swap, attic insulation, sealing up drafts, or checking what rebates your state offers through programs like HEAR (the federal home electrification and appliance rebate program) — that's the kind of news we can help you plan around. This piece isn't that.