Actually they have that figured.

Run a small, high voltage wire to under the dash. Attach through fuse
and confuse customer with odd numbering. Take the fuses line to a power
block - contains a switcher in a block (swap out) and the block produces
5, 6, 12, 14, 28v..... have three or so blocks of different colors and
they produce various voltages - e.g. for back seat of the drivers - for
the local computer / game console. Another to the xxx for USB and other
charging. It can supply high current or simply reference voltages.
Just modules to plug and play. Kinda like large fist size or thinner -
power pack. Even supply the 12v socket.

Might have to supply a 12V to high voltage for the boost a battery....
(switcher use in reverse).

Martin

On 1/8/2017 2:59 AM, whit3rd wrote:
On Saturday, January 7, 2017 at 8:51:51 AM UTC-8, wrote:
On Sat, 7 Jan 2017 16:21:42 +0000 (UTC), John McCoy
wrote:

"Safe" is considered to be anything less than 52V. There was once
talk about the automotive industry moving to a 48V battery. The
reason for 48V was that it was just below the "safe" limit. Of course
it never happened because it would have caused more problems than it
solved.

At full charging rate, the terminals would be well over 52V; what I remember, the
auto buzz was about '42V', which is a 36V battery and allowance for
overvoltage during heavy charging.

http://www.popularmechanics.com/cars/a2198/4226979/

Changing standards can be an engineering nightmare, because so many
decisions have already been optimized for 12V. There aren't 'too many
problems' so much as too many decisions to be remade.