The Tesla Maser is a new custom-designed sports car intended to be produced by Tesla Corporation. An analysis of the task of building the Maser reveals the following list of relevant activities, their immediate predecessors, and their duration:

Activity	Description	Immediate predecessor(s)	Duration (Days)
A	Start	-	0
B	Design	A	8
C	Order special accessories	B	0.1
D	Build Frame	B	1
E	Build Doors	B	1
F	Attach axles, wheels and gas tank	D	1
G	Build Body Shell	B	2
H	Build transmission and drivetrain	B	3
I	Fit Doors to body shell	G, E	1
J	Build Engine	B	4
K	Bench-test engine	J	2
L	Assemble Chassis	F,H,K	1
M	Road-test Chassis	L	0.5
N	Paint body	I	2
O	Install Wiring	N	1
P	Install Interior	N	1.5
Q	Accept delivery of special accessories	C	5
R	Mount body and accessories on chassis	M,O,P,Q	1
S	Road test car	R	0.5
T	Attach exterior trim	S	1
U	Finish	T	0

Draw a network diagram for the project, showing the starts and the finishes.

Mark the critical path and state its length.

If the Maser had to be completed two days earlier, would it help to:

Buy preassembled transmissions and drivetrains?

Install robots to halve engine-building time?

Speed delivery of special accessories by three days?

How might resources be borrowed from activities on the noncritical path to speed activities on the critical path?