Lyft says ride-hailing apps are replacing personal car ownership, but the evidence is mixed at best. (The Street) City Lab and the Arizona Mirror delve into the effort — guided by both corporate dark money and the misguided notion that road diets hurt small business — to halt light-rail expansion in Phoenix. Streetsblog covered last week. Mopeds are the latest entrant into the Washington, D.C. app-based mobility sweepstakes. Next up? Tricycles and e-cargo bikes (WaPost).