Thanks Ricalynn, Saltpastilen and Seabody for your answers. I thought that was the case with regards to the nooboos and the motive mobile, I just wanted to make sure.
Oh and I'm just now realising just how awesome the motive mobile is in game. I think I like it even more than I like the potent invigoration elixir, or whatever that elixir is that lets your sim be up without sleep for 24+ hour, as you can put multiple sims in it and send them around the corner and return home and let them get back on with their skilling activities. Poor Cyclon3 no longer is living on coffee ... and none of my six sims (5 YA and 1 A) need to use their beds for sleeping just for *ahem* nooboo making purposes.
My biggest challenge for my founder is not going to be him supermaxing guitar, believe it or not.
It is going to be achieving his LTW of One Sim Band.
Though with the motive mobile and what I intend for his 3rd Unique LTR, I'm hopeful that he'll get it without too many issues. As I've observed previously, I'm mad.
Edit: Umm ... the motive mobile seems to be multiplying. I had Cyclon3 purchase it with his LTHPs and he gave it to a couple of the others in the house (Blair and Tamara) to use. They gave it back to him. Now on looking through their personal inventories, all three of them have a motive mobile. Cyclon3's is described as 'Cyclon3's preferred motive mobile 3000, and Blair and Tamara's is simply called Motive Magenta 3000.
Aha! I've just tried to move them out of their personal inventories. The one held by Blair allows me to do so, and shows it up as having a value of $4500. The ones held by Cyclon3 and Tamara don't allow me to do that. So it would appear I still only have the 1, and for some reason it still appears in the others' personal inventory. Will this cause any problems?