Table 2.

Results summary.

Measure	$\mathrm{\Delta }$ Group (vs. $\mathrm{\Delta }$ Group 1 Control)	$\mathrm{\Delta }$ Pre-Post (groups combined)
Lap time	. (trending) Group 2 (+)	*** (−)
Max speed	** Group 2 (−)	*** (+)
Racing line distance	* Group 2 (−), * Group 4 (−)	NS
Average acceleration	** Group 2 (−)	*** (+)
Trust in AV coach	NS	*** (+)
General trust in AVs	NS	** (+)
Self-report Perf. driving expertise	NS	*** (+)
Self-report driving confidence	NS	*** (+)

Impact of AI Coaching measured via LME. Direction of effect is indicated in parentheses.

Sig. Codes: ‘***’ $p<0.001|$ ‘**’ $p<0.01|$ ‘*’ $p<0.05|$ ‘. (trending)’ $p<0.1$.