Traffic Junkie, it might keep him guessing if you don't tell him why you want him to hang around. And then you can think up a mildly plausible reason whilst walking -running- your children to school. I'm pretty sure he'd hang around even if he wasn't sure why. But maybe I'm the underhand one here.
Whichever way suits you is the best, obviously. 
My garage guy is on holiday from tomorrow evening onwards and, I must confess, I'm getting into a negative mindset. What happens if he meets the girl of his dreams during his break before he comes over to my house to see my old -clapped-out- Jaguar he's going to help me sell the week after next. Or maybe he's already got one?
A friend of mine was over at the garage yesterday. She said when he saw her he was quite smiley. I immediately thought 'oh no, I'm imagining all the signs I was so sure about before. He's like that with everybody. Woe is me, etc.' She immediately assumed he was smiling because he recognised her as my friend as he's seen us together a couple of times in the past. I fail to see that.
My sensible side is willing to wait for over a week. The other side wants to call him tomorrow....to say what?
OMG, I feel pathetic but he's well and truly stuck in my head. 