i am looking for an android box but with different intentions

what i am looking for is a box that either can startup really fast (within 10 seconds max) or one that has a very low power consumption or can be put in sleep mode

i thought to ymself why not add an android box to my car and a small display panel ... ultimately it should replace my car radio, as i use my current radio only in bluetooth mode for my phone as an amplifier and everythign else runs on my phone, like music player, radio and navigation but i want to have it wired into my car.

most of the android car PC solutions available are oriented more to a high tech multimedia use, what i want is a simple android phone mounted into my console more or less :P

i tested raspberry pi but was underwhelmed by the boot time and overwhelmed on the power consumption even in lowest power state ... or i did miss out on how to setup hibernate or sth

tl;dr; requirements:

• low power with standby or fast startup not more than 10 seconds (at least shorter than 20 seconds)
• HDMI and touch capabilities (i have a couple of touch displays in mind to use) or recommend a fitting touch display (capa touch not resistive film) that fits a radio car double slot or single slot as retractable display