Full bakup into multiple files

Hi,

We have below situation regarding SQL Backup.
  1. We do not have enough local disk space for backup.
  2. We can not do network backup.
  3. We do not have full backup.
  4. Tape is not an option.

Now we want to take full backup to local disk into multiple files. ( no. of files should not be fixed )
We will MS SQL create multiple files say.
1. FB-DATE-TIME.BACKUP     size:20 GB
2. ``                      size:20GB
3. ``                      size :20 GB
      :::::::::::::::::::::::::::::::::::::::::::::
      :::::::::::::::::::::::::::::::::::::::::::::
      :::::::::::::::::::::::::::::::::::::::::::::

When first file 1.FB-DATE-TIME.BACKUP is full 20GB , MS SQL should take 2. file to write so that we can move 20GB file to USB disk.

Can MS SQL create multiple files and write into those files one by one.

Will those files be restorable?

Best Regards,
Tushar