[SeaBIOS] VirtualBox BIOS

[Fred .]

Can SeaBIOS be used with VirtualBox?
Why isn't SeaBIOS the default BIOS in VirtualBox?

Since VirtualBox is open source, can or does the SeaBIOS project look
at the source code
of the BIOS implementation in VirtualBox for hints how things are done?

Can SeaBIOS be used with VMware?