I researched it. I believed I needed a stroller for two that was the width of a single and had air-filled tires. So I spent a lot of money on Phil & Teds Vibe.
I took it to the grocery yesterday. Marshall pushed it while I loaded the cart.
Everyone was happy. Euphoria!
It is the answer to my problems, ALL of them, including the bus-riding, kid-carting, Ecuador-trapesing ones!
I plan to sell it in the fall, (if I can part with it).