Hi Frantic,
If you buy the microcontroller, it will be blank. Maybe you want to build your own USBDM ? In this case have a look to S08JS16 versions which can be flashed throw the USB connection. It is also possible to buy USBDM on eBay for example.
To answer you second question, no. S08JM devices are only available from -40°C to 85°C.
Regards,
Joel Guittet