Happy state initially: no issues really, vehicle as new assuredly (7)
I believe the answer is:
nirvana
'happy state' is the definition.
'nirvana' can be an answer for 'state' (nirvana is a kind of state). I'm not sure about the 'happy' bit.
'initially no issues really vehicle as new assuredly' is the wordplay.
'initially' says to take the initial letters.
The initial letters of 'no issues really vehicle as new assuredly' is 'NIRVANA'.
Can you help me to learn more?
(Other definitions for nirvana that I've seen before include "Buddhist enlightened state" , "Kurt Cobain group" , "Iran van (anag) - blissful state!" , "Buddhist blessed extinction" , "Transcendent state - US grunge band" .)