My wife is a lazy little turd. but she's my lazy little turd!

She doesn't really care for cycling, and honestly, it's a seasonal hobby at best for me. So I want her to come along with me on rides, but her Wal-Mart bike is always so slow, and she gets tired and uncomfortable on long rides.

Are there dog/child carriers big enough for a 5'3" 105lb Asian woman? She thinks it's a funny idea to have me tow her, and I think it'd be a good workout, while also having her come along with me on bike rides.