Sorry for the latecomer:

> This chip [...] although tempting for a mobile device, is actually for
> another kind of mobile device: A car...

Freescale target the MPC5121e also at:

- Set-top boxes
- Gaming and pachinko machines
- Ultra-mobile PCs

Source: http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MPC5121e