Corran "Coz" Powell, 21, died following the collision in Braintree, Essex, in December 2014.
His family is raising money to buy a particular area of land on which he dreamed about running outdoor survival courses for disadvantaged young people.
The centre would also be used as a venue for new bands and charity events.
"I can't think of anything else we could have done that was more fitting, or more Coz," his mother Gennie said.
"I think he'd be 100% behind it. If he's watching now he'd be saying 'Come on Mum, keep going'.
Mrs Powell said even if they could not raise enough money to buy the land "he loved and built his plans around", his relatives would make sure they followed through "even if it's just three acres".
Mrs Powell said her son, who was from Gosfield, Essex, dreamt of "teaching other young people to understand, be safe in and respect our countryside".
"He loved being active outdoors and having been introduced to woodland survival was passionate about the skills and confidence it gave him," she said.
On the family's fundraising page, Mrs Powell wrote: "We have the skills and knowledge to set up the kind of Centre that Coz had in mind but we do not have the money."
The family will contribute money paid from Mr Powell's car insurance life cover towards its Â£200,000 target.
The family of a young musician killed in a car crash is aiming to fulfil his lifelong ambition to buy land and create an outdoor centre for children.